| Vacuum hose diameter? [message #354696] |
Thu, 14 May 2020 14:24  |
6cuda6
Messages: 975
Registered: June 2019
Karma: -6
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What is the diameter of the vacuum hose on these motors? I cant find my reference and a search here got me everything but......
Rich Mondor,
Brockville, ON
77 Hughes 2600
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| Re: Vacuum hose diameter? [message #356746 is a reply to message #354696] |
Tue, 14 July 2020 00:00  |
indymac
Messages: 26
Registered: August 2013
Location: Decatur, IN
Karma: 0
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I just battled this. They're 3/16".
Problem is everything in the parts stores are metric, I think around 5mm.
I found 3/16 clear hose in the hardware store while I waited for my online 3/16" order to arrive.
Clear seemed to work OK, not sure how they hold up to heat.
There's a larger size I haven't tackled yet but I expect the same.
Although the larger hoses might have mm that fits.
77 Palm Beach 403
Decatur, IN
TZE167V101738
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| Re: Vacuum hose diameter? [message #356749 is a reply to message #356746] |
Tue, 14 July 2020 04:51 |
6cuda6
Messages: 975
Registered: June 2019
Karma: -6
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Senior Member |
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Thanks for the info!!
indymac wrote on Tue, 14 July 2020 01:00I just battled this. They're 3/16".
Problem is everything in the parts stores are metric, I think around 5mm.
I found 3/16 clear hose in the hardware store while I waited for my online 3/16" order to arrive.
Clear seemed to work OK, not sure how they hold up to heat.
There's a larger size I haven't tackled yet but I expect the same.
Although the larger hoses might have mm that fits.
Rich Mondor,
Brockville, ON
77 Hughes 2600
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| Re: Vacuum hose diameter? [message #357454 is a reply to message #356775] |
Mon, 03 August 2020 10:28 |
indymac
Messages: 26
Registered: August 2013
Location: Decatur, IN
Karma: 0
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Junior Member |
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Whatever they have in parts stores today seem to be metric. And they get confused when you say you need a different size.
While on large things sometimes metric will closely fit " dimensions, on small sizes the differences extrapolate, one can be too loose, and one too tight.
Let alone hard to measure with caliper for ID and OD.
Just a caution of metric vs. ", especially on small critical components.
Hey, we were all supposed to go metric in the 60's.
What happened?
77 Palm Beach 403
Decatur, IN
TZE167V101738
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| Re: Vacuum hose diameter? [message #357600 is a reply to message #354696] |
Sun, 09 August 2020 10:16 |
indymac
Messages: 26
Registered: August 2013
Location: Decatur, IN
Karma: 0
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Junior Member |
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Oh, in the "do as I say, not as I do" category,
Take the fitting (or piece of hose) with you.
1) someone may have changed it from original
2) something/anything may fit to your satisfaction.
Slow learning on this end, but I'm getting better
77 Palm Beach 403
Decatur, IN
TZE167V101738
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| Re: Vacuum hose diameter? [message #357704 is a reply to message #357503] |
Fri, 14 August 2020 00:27 |
rickmike
Messages: 252
Registered: September 2011
Location: United States
Karma: 0
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rgogan wrote on Tue, 04 August 2020 15:21Vacuum hoses are measured in /32" and are designed to avoid collapse.
Learned this when I replaced my brake booster vacuum hose with non vacuum line. Drove for years afterwards wondering why my power assist braking would fade so rapidly. HOSE WAS COLLAPSING. Resolved with fitting proper sized non collapsible vacuum hose.
The same thing can happen with the new fuel hoses. They are designed for pressure not for being under vacuum and they have been found to collapse when on the vacuum side of the fuel pump causing 'Vapor lock' symptoms.
Rick M.
1974 26' Canyonlands
aka "The General"
Clinton, TN
[Updated on: Sun, 16 August 2020 11:13] Report message to a moderator |
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